Mammals: donkeys, camels

Reptiles: crocodiles

Birds: Crows

Insecta: ants

Details are as follows:

1, donkey

Mammals, Chiroptera, Equidae, Equus, Horses and Donkeys all belong to Equus, also known as Erdonkey, but different species have the same origin. They are smaller than horses and zebras, but they have many common characteristics with horses: the third toe is well-developed and hoofed, and the other toes are degraded. The image of a donkey is like a horse, mostly taupe and not dignified. It has a big head and long ears, a slightly narrow chest, thin limbs and a short trunk, so its height and length are roughly the same, and it is square. Thin neck skin, small and firm hooves, strong physique and strong resistance. Donkeys are strong, resistant to extensive farming, not easy to get sick, and have the advantages of docile temperament, diligence and obedience.

2.crocodiles

According to archaeological findings, the largest crocodile is 12 meters long and weighs nearly 6.5 tons. However, the average length of the existing large crocodiles is more than 4 meters and the weight is about 300 kilograms. The largest living crocodile in history is nearly 7 meters long and weighs nearly 1.5 tons. Maximum scientific research record (alive) 6.17m, weight 1075kg. The lower jaw is strong, with many tapered teeth, short legs, claws and webbed toes. The tail is long and thick with scales.

3. Camels

Camel, with a small head and a long, thick neck, is bent like a goose neck. Tall, with brown hair. Desperate. Camels can live for three weeks without water and for a month without food. Only two kinds of animals belong to the camel family. Short-haired camels mainly live in tropical areas such as North Africa, West Asia and India. Herdsmen living in desert areas feed on the blood of camel milk and even camels. At present, there are only 654.38+400 million camels in the world, all of which are domestic animals.

4.crow

Crow is a general term for several black birds of passeriformes. Also known as the old owl, he likes singing and has a fierce temperament. It is the largest individual among passerine birds, with a body length of 400~490 mm, mostly black or black and white feathers, a long beak, and some bright white-collar workers. Kuroha has a purple-blue metallic luster; Wings are much longer than tails; The mouth, legs and feet are pure black. There are 36 species of crows, which are distributed almost all over the world. There are 7 species in China, most of which are resident birds.

5. ants

Ants are insects, Arthropoda, Insecta, Hymenoptera, Formicidae. There are many kinds of ants, including 1 1700 species in the world and 283 genera of 2 1 subfamily. More than 600 species have been identified in China. Recently, a new ant was discovered that reproduces asexually. Ants live a long life. Worker ants can live for several weeks to 3- 10 years, and queens can live for several years or even ten years. An ant nest can grow in 1 place for several years or even more than ten years.